I've made several adjustment to DO. How do I get it back to it's initial state? i.e., all factory defaulted preferences, key commands, images, themes, etc.?
Uninstall and reinstall?
I was hoping for something not that drastic. Perhaps I will have to uninstall it one time and then export the "clean" settings.
If you want you can just delete the registry keys and the default toolbars, Opus will re-create the default settings next time it runs.
HKEY_CURRENT_USER\Software\GPSoftware\Directory Opus\Config\User
the toolbars are in the Buttons folder in either the program folder or your App Data folder (depending on whether you're using private or shared config).
There's a Reset All To Defaults option in the Preferences dialog's menu bar. I guess that will have almost the same effect as deleting the registry entries (with a few exceptions like plugin configurations and maybe folder formats (not sure about those and don't want to mess up my settings by trying it out 
)).
(That won't reset the toolbars, though; you still need to delete the contents of the Buttons folder and restart Opus to get back to the default toolbars.)
Oh yeah, forgot about that 